CSS3 equivalent to jQuery slideUp and slideDown?

Question

My application is performing poorly with jQuery\'s slideDown and slideUp. I\'m looking to use a CSS3 equivalent in browsers which support it.

Is it possible, using C

Answer 1

Variant without JavaScript. Only CSS.

CSS:

.toggle_block {
    border: 1px solid #ccc;
    text-align: left;
    background: #fff;
    overflow: hidden;
}
.toggle_block .toggle_flag {
    display: block;
    width: 1px;
    height: 1px;
    position: absolute;
    z-index: 0;
    left: -1000px;
}
.toggle_block .toggle_key {
    font-size: 16px;
    padding: 10px;
    cursor: pointer;
    -webkit-transition: all 300ms ease;
       -moz-transition: all 300ms ease;
        -ms-transition: all 300ms ease;
         -o-transition: all 300ms ease;
            transition: all 300ms ease;
}
.toggle_block .content {
    padding: 0 10px;
    overflow: hidden;
    max-height: 0;
    -webkit-transition: all 300ms ease;
       -moz-transition: all 300ms ease;
        -ms-transition: all 300ms ease;
         -o-transition: all 300ms ease;
            transition: all 300ms ease;
}
.toggle_block .content .toggle_close {
    cursor: pointer;
    font-size: 12px;
}
.toggle_block .toggle_flag:checked ~ .toggle_key {
    background: #dfd;
}
.toggle_block .toggle_flag:checked ~ .content {
    max-height: 1000px;
    padding: 10px 10px;
}

HTML:

    
    clicker
    

        Text 1

        Text 2

        close
    

For next block only change ID and FOR attributes in html.